package OOP;

import java.util.Scanner;
public class Zuoye {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String a=in.next();
        if(a.endsWith(".zip")||a.endsWith(".rar")) System.out.println("正确");
        else System.out.println("错误");
    }
}
